/** * @fileoverview Rule to enforce line breaks between arguments of a function call * @author Alexey Gonchar * @deprecated in ESLint v8.53.0 */ "use strict"; //------------------------------------------------------------------------------ // Rule Definition //------------------------------------------------------------------------------ /** @type {import('../types').Rule.RuleModule} */ module.exports = { meta: { deprecated: { message: "Formatting rules are being moved out of ESLint core.", url: "https://eslint.org/blog/2023/10/deprecating-formatting-rules/", deprecatedSince: "8.53.0", availableUntil: "10.0.0", replacedBy: [ { message: "ESLint Stylistic now maintains deprecated stylistic core rules.", url: "https://eslint.style/guide/migration", plugin: { name: "@stylistic/eslint-plugin-js", url: "https://eslint.style/packages/js", }, rule: { name: "function-call-argument-newline", url: "https://eslint.style/rules/js/function-call-argument-newline", }, }, ], }, type: "layout", docs: { description: "Enforce line breaks between arguments of a function call", recommended: false, url: "https://eslint.org/docs/latest/rules/function-call-argument-newline", }, fixable: "whitespace", schema: [ { enum: ["always", "never", "consistent"], }, ], messages: { unexpectedLineBreak: "There should be no line break here.", missingLineBreak: "There should be a line break after this argument.", }, }, create(context) { const sourceCode = context.sourceCode; const checkers = { unexpected: { messageId: "unexpectedLineBreak", check: (prevToken, currentToken) => prevToken.loc.end.line !== currentToken.loc.start.line, createFix: (token, tokenBefore) => fixer => fixer.replaceTextRange( [tokenBefore.range[1], token.range[0]], " ", ), }, missing: { messageId: "missingLineBreak", check: (prevToken, currentToken) => prevToken.loc.end.line === currentToken.loc.start.line, createFix: (token, tokenBefore) => fixer => fixer.replaceTextRange( [tokenBefore.range[1], token.range[0]], "\n", ), }, }; /** * Check all arguments for line breaks in the CallExpression * @param {CallExpression} node node to evaluate * @param {{ messageId: string, check: Function }} checker selected checker * @returns {void} * @private */ function checkArguments(node, checker) { for (let i = 1; i < node.arguments.length; i++) { const prevArgToken = sourceCode.getLastToken( node.arguments[i - 1], ); const currentArgToken = sourceCode.getFirstToken( node.arguments[i], ); if (checker.check(prevArgToken, currentArgToken)) { const tokenBefore = sourceCode.getTokenBefore( currentArgToken, { includeComments: true }, ); const hasLineCommentBefore = tokenBefore.type === "Line"; context.report({ node, loc: { start: tokenBefore.loc.end, end: currentArgToken.loc.start, }, messageId: checker.messageId, fix: hasLineCommentBefore ? null : checker.createFix(currentArgToken, tokenBefore), }); } } } /** * Check if open space is present in a function name * @param {CallExpression} node node to evaluate * @returns {void} * @private */ function check(node) { if (node.arguments.length < 2) { return; } const option = context.options[0] || "always"; if (option === "never") { checkArguments(node, checkers.unexpected); } else if (option === "always") { checkArguments(node, checkers.missing); } else if (option === "consistent") { const firstArgToken = sourceCode.getLastToken( node.arguments[0], ); const secondArgToken = sourceCode.getFirstToken( node.arguments[1], ); if ( firstArgToken.loc.end.line === secondArgToken.loc.start.line ) { checkArguments(node, checkers.unexpected); } else { checkArguments(node, checkers.missing); } } } return { CallExpression: check, NewExpression: check, }; }, };